Sioux Lookout – Weather – A foggy, mist-filled morning will transition into a gusty, unsettled Friday with afternoon showers and a risk of thunderstorms.
The weekend turns cooler with scattered showers lingering, keeping conditions damp and fall-like.
Today’s Weather Overview
Current Conditions
At Sioux Lookout Airport (6:00 AM CDT): Mist, 16.8°C, dew point 16.8°C, humidity 100%, light WSW wind at 6 km/h, visibility 4 km, pressure 101.5 kPa and rising.
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Friday (Today): Mix of sun and cloud, 60% chance of showers late afternoon with thunderstorm risk. Winds strengthening W 30 km/h, gusts 50 by morning. High near 23°C. UV index 6 (High).
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Tonight: Mainly cloudy, 60% chance of showers, with a risk of an early evening thunderstorm. Winds W 30 km/h gusting to 50, becoming lighter briefly then strengthening again after midnight. Low ~10°C.
Tomorrow’s Forecast
Expected Conditions (next three days)
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Saturday, Aug 23: Cloudy with 60% chance of showers and risk of afternoon thunderstorms. Cooler with a high ~16°C. UV index 2 (Low).
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Saturday Night: Cloudy with a 40% chance of showers. Low ~9°C.
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Sunday, Aug 24: Cloudy with a 30% chance of showers. High ~15°C.
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Sunday Night: Cloudy periods, low ~6°C.
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Monday, Aug 25 (outlook): Mix of sun and cloud, trending drier, high near 18°C.
Wardrobe Recommendations
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Today: Dress in layers—a light jacket is wise for gusty winds and passing showers. Keep a rain shell or umbrella ready.
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Saturday: Cooler—wear a sweater or fleece under a waterproof jacket.
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Sunday: Highs in the mid-teens mean fall-like attire: jeans, a sweater, and a light coat.
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Evenings: Chilly lows (6–10°C) mean you’ll want a hoodie or fleece for comfort.
Weather Trivia
Why does Sioux Lookout often wake up to mist?
Surrounded by lakes and wetlands, Sioux Lookout’s humid environment promotes radiation fog and mist when overnight lows match the dew point. Calm winds allow water vapor to condense near the ground, reducing visibility—common in late summer mornings across northwestern Ontario.
